"I have a sex scene in this film, and that's never comfortable," she told the magazine. "You think, 'Oh, this is going to be so awkward. But this scene isn't supposed to be a steamy one -- it's sort of tragic, because this girl is so desperately trying to keep this man interested.

"It's more intimate than most sex scenes," she said. "I'm pretty much crying in it."

Long-Lost Celebrity Twins

The blonde bombshell said she's much more comfortable playing socialite Serena van der Woodsen on her hit TV series.

"I can snap into Serena very easily," the 22-year old said. "The way I dress as Serena is pretty much the way I dress as me. I'm living in New York City, shooting in New York city," she said. "I'm in a comfort zone."